Method and apparatus for constructing ontology for dialogue system

Abstract

Provided are a method and an apparatus for constructing an ontology for a dialogue system. The method for constructing an ontology for a dialogue system includes: generating a domain ontology plane based on intra-plane relation information of a domain defining a relationship between a plurality of domain nodes; generating a main act ontology plane based on intra-plane relation information of a main act defining a relationship between a plurality of main act nodes; and generating an entity name ontology plane based on intra-plane relation information of an entity name defining a relationship between a plurality of entity name nodes. Therefore, it is possible to construct multiple ontology planes and discriminate components of dialogue frames such as a domain, a main act and an entity name. Also, an effective system response can be performed by discriminating dialogue frames exactly using the multi ontology planes.

What is claimed is:  
     
         1 . A method for constructing an ontology for a dialogue system performed by an ontology construction apparatus, the method comprising:
 generating a domain ontology plane based on intra-plane relation information of a domain defining a relationship between a plurality of domain nodes;   generating a main act ontology plane based on intra-plane relation information of a main act defining a relationship between a plurality of main act nodes; and   generating an entity name ontology plane based on intra-plane relation information of an entity name defining a relationship between a plurality of entity name nodes.   
     
     
         2 . The method of  claim 1 , further comprising constructing an inter-plane relation based on inter-plane relation information defining a relationship between the domain ontology plane, the main act ontology plane and the entity name ontology plane. 
     
     
         3 . The method of  claim 2 , wherein in the constructing of an inter-plane relation,
 the inter-plane relation is constructed based on the inter-plane relation information comprising inter-plane probability information indicating mutual relations between the plurality of domain nodes, the plurality of main act nodes and the plurality of entity name nodes.   
     
     
         4 . The method of  claim 1 , wherein in the generating of a domain ontology plane,
 the domain ontology plane is generated based on the intra-plane relation information of a domain comprising at least one transition probability information of a domain node, use keywords similarity information of a domain node and layer information of a domain node, which can define a relationship between the plurality of domain nodes.   
     
     
         5 . The method of  claim 1 , wherein in the generating of a main act ontology plane,
 the main act ontology plane is generated based on the intra-plane relation information of a main act comprising at least one transition probability information of a main act node, use keywords similarity information of a main act node and performance order information of a main act node, which can define a relationship between the plurality of main act nodes.   
     
     
         6 . The method of  claim 1 , wherein in the generating of an entity name ontology plane,
 the entity name ontology plane is generated based on the intra-plane relation information of an entity name comprising at least one transition probability information of an entity name node, use keywords similarity information of an entity name node and simultaneous entrance probability information of an entity name node, which can define a relationship between the plurality of entity name nodes.   
     
     
         7 . An apparatus for constructing an ontology for a dialogue system comprising:
 a domain management unit configured to manage a domain ontology plane generated based on intra-plane relation information of a domain defining a relationship between a plurality of domain nodes;   a main act management unit configured to manage a main act ontology plane generated based on intra-plane relation information of a main act defining a relationship between a plurality of main act nodes; and   an entity name management unit configured to manage an entity name ontology plane generated based on intra-plane relation information of an entity name defining a relationship between a plurality of entity name nodes.   
     
     
         8 . The apparatus of  claim 7 , further comprising an inter-plane relation management unit configured to construct an inter-plane relation based on inter-plane relation information defining a relationship between the domain ontology plane, the main act ontology plane and the entity name ontology plane. 
     
     
         9 . The apparatus of  claim 8 , wherein the inter-plane relation management unit constructs the inter-plane relation based on the inter-plane relation information comprising inter-plane probability information indicating mutual relations between the plurality of domain nodes, the plurality of main act nodes and the plurality of entity name nodes. 
     
     
         10 . The apparatus of  claim 7 , wherein the domain management unit manages the domain ontology plane based on the intra-plane relation information of a domain comprising at least one transition probability information of a domain node, use keywords similarity information of a domain node and layer information of a domain node, which can define a relationship between the plurality of domain nodes. 
     
     
         11 . The apparatus of  claim 7 , wherein the main act management unit manages the main act ontology plane based on the intra-plane relation information of a main act comprising at least one transition probability information of a main act node, use keywords similarity information of a main act node and performance order information of a main act node, which can define a relationship between the plurality of main act nodes. 
     
     
         12 . The apparatus of  claim 7 , wherein the entity name management unit manages the entity name ontology plane based on the intra-plane relation information of the entity name comprising at least one transition probability information of an entity name node, use keywords similarity information of an entity name node and simultaneous entrance probability information of an entity name node, which can define a relationship between the plurality of entity name nodes.